2L53: Apo-calmodulin

Solution NMR Structure of apo-calmodulin in complex with the IQ motif of Human Cardiac Sodium Channel NaV1.5. Determined by solution NMR. Released 5 Jan 2011.

Method
Solution NMR
Organism
Homo sapiens
Chains
2
Atoms
1,414
Mol. weight
20.25 kDa
Released
5 Jan 2011

Explore 2L53 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2L53 contains 10 α-helices and 5 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 9 helices, 5 β-strands

ElementResiduesLengthSheet
α-helix6-1914
β-strand26-2831
α-helix29-3810
α-helix45-539
α-helix56-583
β-strand62-6431
α-helix65-7511
α-helix82-9211
β-strand100-10122
α-helix102-1109
α-helix118-12912
β-strand13212
β-strand135-13622
α-helix138-1447
Chain B: 1 helix, 0 β-strands
ElementResiduesLengthSheet
α-helix-1-192021

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
CalmodulinAprotein148Homo sapiensP62158
Voltage-gated sodium channel type V alpha isoform b variantBprotein31Homo sapiensQ14524 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>2L53_1 Calmodulin (chains A)
ADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGN
GTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEE
VDEMIREADIDGDGQVNYEEFVQMMTAK
Sequence of entity 2 (B), FASTA
>2L53_2 Voltage-gated sodium channel type V alpha isoform b variant (chains B)
GPGSEEVSAMVIQRAFRRHLLQRSLKHASFL

Primary citation

Solution NMR Structure of Apo-Calmodulin in Complex with the IQ Motif of Human Cardiac Sodium Channel NaV1.5. Chagot, B., Chazin, W.J. J Mol Biol (2011) 406:106-119. DOI 10.1016/j.jmb.2010.11.046 · PubMed

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